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Subject[PATCH 1/1] IPv4: Send gratuitous ARP for secondary IP addresses also
From: Zoltan Kiss <schaman@sch.bme.hu>

If a device event generates gratuitous ARP messages, only primary
address is used for sending. This patch iterates through the whole
list. Tested with 2 IP addresses configuration on bonding interface.

Signed-off-by: Zoltan Kiss <schaman@sch.bme.hu>
---
net/ipv4/devinet.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 37b3c18..bc19bd0 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1134,15 +1134,15 @@ static void inetdev_send_gratuitous_arp(struct net_device *dev,
struct in_device *in_dev)

{
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- if (!ifa)
- return;
+ struct in_ifaddr *ifa;

- arp_send(ARPOP_REQUEST, ETH_P_ARP,
- ifa->ifa_local, dev,
- ifa->ifa_local, NULL,
- dev->dev_addr, NULL);
+ for (ifa = in_dev->ifa_list; ifa;
+ ifa = ifa->ifa_next) {
+ arp_send(ARPOP_REQUEST, ETH_P_ARP,
+ ifa->ifa_local, dev,
+ ifa->ifa_local, NULL,
+ dev->dev_addr, NULL);
+ }
}

/* Called only under RTNL semaphore */
--
1.7.4.1


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